Last month, Valve invited select developers to Washington for its first-ever conference. Now, anyone can watch the presentations on the web: Valve has posted 28 videos on YouTube, on its new Steamworks Development YouTube channel.

According to devs whotweeted about the conference, the talks "In-Game Economies in Team Fortress 2 and Dota 2" and "Embracing User Generated Content" were particularly compelling viewing, as were the pair of virtual reality talks from Oculus VR and Valve's Michael Abrash (embedded above).

There are many other talks from many Valve and non-Valve developers at the link, too.